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Expired Canadian patentCanada

Electronic copy selection controls for a document reproduction machine

CA 1104188 A · Owner: International Business Machines Corporation · Inventors: Hubbard, James H.

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A document reproduction machine having a settable copy select register is described in which there is provided means for resetting said copy select register to zero means, for starting a given copy run in said machine and means, responsive to the starting means and the copy select register to actuate the machine to produce a number of copies indicated by the copy select register and further having means responsive to the copy select register being reset to zero and to the starting means to actuate the machine to produce a single copy during the given copy run. BO976003

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted June 30, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 19, 1980
GrantedJune 30, 1981
Term endedJune 30, 1998
Patent numberCA 1104188 A
Classification (IPC)G03G15/22

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Application filedAug 19, 1980Patent grantedJune 30, 1981Term endedJune 30, 1998

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.